Grade Crossing Camera Surveillance for Train Obstacle Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current grade crossing protection systems may not provide train operators with sufficient time to stop a train due to the possibility of obstacles being present within the crossing, even with operational warning devices, as they rely on the assumption that the crossing is clear.
Innovation Solution
A system incorporating cameras to provide real-time surveillance of grade crossings, transmitting images to a train's onboard control unit, which can reduce or stop the train's speed based on its proximity to the crossing, ensuring the operator has enough time to react to any obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional grade crossing protection devices are used, then the crossing is protected with visual and audible signals, but the train operator may not have sufficient time to stop if an obstacle is present
Solution Approach 1:
The system performs preliminary detection of obstacles at the grade crossing using cameras and sensors before the train arrives. By identifying hazards in advance and transmitting this information to the train operator, the system enables the operator to take preliminary action (reducing speed or preparing to stop) while still maintaining normal operating speeds, thus resolving the contradiction between safety and response time
Solution Approach 2:
The system establishes a feedback loop where sensors at the crossing continuously monitor for obstacles and transmit this information to the train's control system. This real-time feedback allows the train operator to adjust speed based on actual crossing conditions, ensuring both safety through obstacle detection and adequate response time through continuous information updates
2Ease of operation
If the train operator relies on GCP device activation to proceed, then the system operates on the assumption the crossing is clear, but obstacles may still be present
Solution Approach 1:
The system introduces an intermediary detection layer (cameras, sensors, and image processing systems) between the traditional GCP device and the train operator. This intermediary actively monitors the crossing for obstacles and provides independent verification beyond the simple activation signal, enhancing detection reliability while maintaining ease of operation through automated monitoring
Solution Approach 2:
The system replaces reliance on mechanical assumption (that GCP activation guarantees a clear crossing) with electronic and optical detection systems. Cameras and sensors electronically monitor the crossing area, substituting the mechanical/assumption-based approach with active electronic detection that can identify obstacles regardless of GCP device status
Data Source
AI summary
Apparatus and methods for a grade crossing protection system include at least one camera providing surveillance of a grade crossing, the at least one camera coupled to a transmitter configured to transmit a signal that includes imagery of the grade crossing to a transceiver onboard a train. A display unit onboard the train is provided to allow the train operator to view the grade crossing. A control unit in communication with the transceiver is configured to monitor the received signal and, based upon a determined location of the train relative to the train crossing, issue a command to the train's brake system to reduce the speed of the train, or stop the train, before the train reaches the grade crossing.